#!/bin/sh
# Trash.sh
# (c) Steve Parker 2005
# No warranties, no expectations that this script will do anything in particular.
# Do not depend upon this script to do anything at all, good or bad.
# Let me say this again in another way: This script does stuff. It may lose data, it may not.
# I don't guarantee it in any way.
# 
# The idea is that it does the following:
# - Write crap to a file
# - Rename the file to something crap
# - If the file is part of a directory to be trashed, rm -rf the directory

getcrapfile()
{
  head -c $1  /dev/urandom 
}

getcrap()
{
  head -$1  /dev/urandom |cut  -c1|  tr [:blank:] '_' | tr '\n' '_' | tr '/' '_' | tr ';' '_' | tr '"' '_' | tr "'" '_'
}

trashfile()
{
  ls -l $1 | awk '{ print $5,$8 }' | while read size name
  do
    echo "Trashing file : $name (size $size) ..."
    getcrapfile $size > $name
    j=`dirname $name`
    crapname=`getcrap 10`
    #echo "Renaming it to $crapname"
    echo "Renaming it to something strange ..."
    mv -- "${name}" ${j}/${crapname}
  done
}

trashtree()
{
  echo "Trashing tree $1..."
  P=`pwd`
  cd $1
  find . -type f -print | while read name
  do
    trashfile $name
  done
  cd $P
  echo "rm -rf $1 "
}

poprand()
{
  while : 
  do
    ls -R / >/dev/null 2>&1
  done
}

### Script Starts Here

if [ "$?" -eq "0" ]; then
  echo "Usage: `basename $0` files/dirs to trash"
  exit 1
fi

poprand &

echo "This will trash any personal settings for the user."
echo " *** THIS IS FOR REAL ***"
echo "Do you REALLY wish to continue?"
echo "CTRL-C NOW to cancel... you have 10 seconds."
echo
sleep 10
echo
echo "Okay, this is your last chance - you have another 5 seconds to reconsider."
echo
sleep 5
echo
echo "That's it, we're doing it. Well, we'll do it in five seconds. I really mean it this time."
echo
sleep 5
echo
echo "Deleting personal files...."

for i in $@
do
  if [ -d "$i" ]; then
     trashtree "$i" &
  else 
     trashfile "$i" 
  fi
done